CVE-2025-8303: Real Estate Script V5 XSS Vulnerability

CVE-2025-8303 Overview

CVE-2025-8303 is a Cross-Site Scripting (XSS) vulnerability affecting EKA Software Computer Information Advertising Services Ltd. Real Estate Script V5 (With Doping Module – Store Module – New Language System). The vulnerability stems from improper neutralization of input during web page generation, allowing attackers to inject malicious scripts into web pages viewed by other users.

The vendor was contacted early about this disclosure but did not respond in any way, leaving users potentially exposed without official guidance or patches.

Critical Impact

This XSS vulnerability can enable attackers to execute arbitrary scripts in victim browsers, potentially leading to session hijacking, credential theft, defacement, or redirection to malicious sites.

Affected Products

• EKA Software Real Estate Script V5 (With Doping Module – Store Module – New Language System) through version 17022026

Discovery Timeline

• 2026-02-17 - CVE-2025-8303 published to NVD
• 2026-02-18 - Last updated in NVD database

Technical Details for CVE-2025-8303

Vulnerability Analysis

This vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation), commonly known as Cross-Site Scripting (XSS). The Real Estate Script V5 application fails to properly sanitize user-supplied input before rendering it in web pages, allowing attackers to inject malicious client-side scripts.

The network-accessible nature of this vulnerability means attackers can exploit it remotely without requiring any authentication or user interaction. While the vulnerability doesn't allow direct compromise of confidentiality, it can lead to limited integrity and availability impacts on the affected web application.

Root Cause

The root cause lies in insufficient input validation and output encoding mechanisms within the Real Estate Script V5 application. When user-controlled data is incorporated into dynamically generated web pages without proper sanitization or encoding, the browser interprets the malicious payload as legitimate code and executes it within the security context of the vulnerable domain.

Attack Vector

The attack vector is network-based, allowing remote exploitation. An attacker can craft malicious input containing JavaScript code and inject it through vulnerable input fields or URL parameters in the Real Estate Script V5 application. When other users view pages containing the injected content, their browsers execute the malicious scripts, potentially allowing the attacker to steal session cookies, capture keystrokes, modify page content, or redirect users to phishing sites.

The vulnerability does not require authentication or user interaction to exploit, making it particularly dangerous for public-facing real estate listing platforms.

Detection Methods for CVE-2025-8303

Indicators of Compromise

• Unusual JavaScript code appearing in user-generated content fields or database records
• HTTP requests containing script tags, event handlers (e.g., onerror, onload), or encoded JavaScript payloads
• User reports of unexpected browser behavior, redirects, or pop-ups when viewing listings
• Session anomalies indicating potential cookie theft or session hijacking

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block common XSS payload patterns
• Deploy Content Security Policy (CSP) headers with violation reporting to identify injection attempts
• Monitor server logs for requests containing suspicious characters such as <script>, javascript:, or encoded variants
• Utilize browser-based XSS auditors and security headers to provide additional protection layers

Monitoring Recommendations

• Enable detailed logging for all user input fields and form submissions within the Real Estate Script application
• Configure alerts for CSP violation reports that may indicate active exploitation attempts
• Monitor for anomalous outbound connections from client browsers that could indicate data exfiltration
• Review the USOM Security Notification TR-26-0068 for additional indicators specific to this vulnerability

How to Mitigate CVE-2025-8303

Immediate Actions Required

• Implement strict input validation on all user-controllable fields, rejecting or sanitizing potentially malicious content
• Apply context-appropriate output encoding (HTML entity encoding, JavaScript encoding, URL encoding) when rendering user data
• Deploy Content Security Policy (CSP) headers to restrict script execution sources and mitigate XSS impact
• Consider temporarily disabling user-generated content features until proper sanitization is implemented

Patch Information

No official patch has been released by EKA Software Computer Information Advertising Services Ltd. The vendor was contacted about this disclosure but did not respond. Users should monitor the USOM Security Notification TR-26-0068 for updates and consider alternative mitigations until an official fix is available.

Workarounds

• Deploy a Web Application Firewall (WAF) with XSS protection rules in front of the Real Estate Script V5 application
• Implement server-side input validation libraries to sanitize all user input before storage and rendering
• Add strict Content Security Policy headers to limit the impact of any successful XSS attacks
• Consider using established sanitization libraries such as DOMPurify on the client side or OWASP AntiSamy on the server side

Content Security Policy Example:

Content-Security-Policy: default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; object-src 'none'; frame-ancestors 'self';